A kind of pt-ru-ir alloy spark plug electrode material and its preparation method and applied spark plug

A pt-ru-ir, electrode material technology, applied in the field of spark plugs, can solve the problems of increased resistivity, composition segregation, poor processing performance, etc., to achieve the effect of reducing resistivity, reducing dosage and improving performance

Active Publication Date: 2022-04-05
昆明富尔诺林科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of Ru can improve the mechanical properties of Pt-Ir alloy, but the resistivity increases
In addition, during smelting, Pt-Ir-Ru alloys are prone to composition segregation and poor processability

Method used

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  • A kind of pt-ru-ir alloy spark plug electrode material and its preparation method and applied spark plug
  • A kind of pt-ru-ir alloy spark plug electrode material and its preparation method and applied spark plug
  • A kind of pt-ru-ir alloy spark plug electrode material and its preparation method and applied spark plug

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A Pt-Ru-Ir alloy spark plug electrode material, the mass percentage ratio is 70% of Pt, 20% of Ru, and 10% of Ir. The preparation method is as follows: according to the nominal composition of the alloy, the corresponding elemental metal powder with a purity of 99.95% is weighed, mixed evenly, and placed in a crucible. Put the above-mentioned crucible into the induction furnace, pass in argon gas to form a protective atmosphere, raise the temperature of the furnace tube to 1950°C, and keep it warm for 5 minutes. After the metal powder raw material is completely melted, it is directly cast into alloy waste.

Embodiment 2

[0042] A Pt-Ru-Ir alloy spark plug electrode material, the mass percentage ratio of Pt 90%, Ru 1%, Ir7.5%, W1%, Ce 0.5%. The preparation method is as follows: according to the nominal composition of the alloy, the corresponding elemental metal powder with a purity of 99.95% is weighed, mixed evenly, and placed in a crucible. Put the above-mentioned crucible into the induction furnace, pass in argon gas to form a protective atmosphere, raise the temperature of the furnace tube to 1950°C, and keep it warm for 5 minutes. After the metal powder raw material is completely melted, it is directly cast into alloy waste.

Embodiment 3

[0044] A Pt-Ru-Ir alloy spark plug electrode material, the mass percentage ratio is Pt 80%, Ru 14.5%, Ir 1%, W 1%, Al 1%, Zr 1%, La 0.5%, Ce 0.5%, Nd 0.5 %. The preparation method is as follows: according to the nominal composition of the alloy, the corresponding elemental metal powder with a purity of 99.95% is weighed, mixed evenly, and placed in a crucible. Put the above-mentioned crucible into the induction furnace, pass in argon gas to form a protective atmosphere, raise the temperature of the furnace tube to 1950°C, and keep it warm for 5 minutes. After the metal powder raw material is completely melted, it is directly cast into alloy waste.

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Abstract

The present invention disclosed a spark plug that PT 公Ru IR alloy spark plugs and their preparation methods and applications. The spark plug electrode material includes: RU 1 to 20 %, IR 1 to 10 %, metal element A 0.05‑55555%, Rare earth element B 0.05‑1.5 %, the balance is PT and inevitable impurities. The metal element A is selected from one or more in one or more in the metal element A from RE, Al, W, NB, Th, Ti, ZR, CR.The present invention can reduce the amount of precious metals, reduce costs, enhance the combination of the crystal world in the alloy organization, improve the toughness and intensity of alloy materials, and improve the resistance of the alloy material's high temperature and ablation;The growth of such shaft crystals has improved the high temperature persistence and conductivity of the alloy.At the same time, the present invention adopts electrical pulse treatment and fast -cooled casting technology during the preparation process, reducing the analysis of components in the process of preparation alloy, reducing the resistivity, and improving the anti -electrical erosion capacity.

Description

technical field [0001] The invention relates to a high-temperature alloy material, in particular to a Pt-Ru-Ir-based high-temperature alloy electrode material, a preparation method and a spark plug prepared by using the material. Background technique [0002] Spark plugs are used to induce combustion in internal combustion engines, usually by creating a spark across a gap between two or more electrodes to ignite the gases of the air / fuel mixture in the engine's cylinder or combustion chamber. Ignition of the gases by the spark causes a combustion reaction in the engine cylinders that does work on the engine's power stroke. High temperatures, high voltages, rapid repetition of combustion reactions, and the presence of corrosive substances in the combustion gases create the harsh environment in which spark plugs must function. This harsh environment can promote erosion and corrosion of the electrodes, negatively impacting the performance of the spark plug over time, potential...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C5/04C22C1/02C22F1/14C21D1/26C22B9/00B22D18/06H01T13/39H01T21/02
CPCC22C5/04C22C1/02C22F1/14C21D1/26C22B9/00B22D18/06H01T13/39H01T21/02
Inventor 李旸周川
Owner 昆明富尔诺林科技发展有限公司
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